A51

A51 is a baseball equipment brand created through joint development between Japanese baseball icon Ichiro Suzuki and Mizuno Corporation, one of Japan's oldest and largest sports equipment makers. The brand is positioned as a new vision of baseball, embedding Ichiro's own ideas and preferences into a focused series of gloves and bats. Its name and identity are tied directly to Ichiro, and the project is presented by Mizuno as a way to bring "the world's highest philosophy" of the game to players' own baseball. The A51 lineup centers on two core product families: gloves and bats. The glove range includes both hardball (kōshiki) and softball (nanshiki) models, sold under the Mizuno Pro A51 name. The hardball gloves are offered in infielder sizes 9 and 11 and outfielder size 18N, while the softball gloves mirror those configurations. The bats are hardball maple models released in February 2024, built around the IS1, IS2, and IS3 shapes with three balance designs — counter, middle, and top balance — at weights of 860g, 850g, and 840g respectively. All are lightweight specifications derived from the "Ichiro Model" and adjusted for high school players aiming to step up their level. The design philosophy behind A51 is unusually detailed and is a core part of the brand's story. For gloves, Ichiro's preferences are reproduced by Mizuno glove craftsman Kōsaku Kishimoto. Key features include leather thinned to the extreme for a lightweight feel while maintaining durability, a platinum-colored silicone emblem used only on Ichiro's own gloves, added leather on the catching surface fingertips for toughness against hard-hit balls, and simple, subtle stamping on the catching surface. The gloves come in box shapes for outfielders and stress-free designs for infielders. For bats, the brand emphasizes lightweight construction across all types, a power-arc line on the back to assist grip strength, embossed sheep leather on the palm for grip, and a refined overall design. The bats carry the A51 stamp and are described as "good bats have good faces." A51 is sold primarily through Mizuno's official online channels in Japan, with the brand page hosted on Mizuno's Japanese baseball site. The lineup includes hardball gloves at ¥69,300 (tax included), softball gloves at ¥47,300, and the hardball maple bat at ¥26,400. The brand also features special talk content on the official page, including a history of Ichiro and Kishimoto and a feature on the surprising quality of the softball A51 glove aimed at high school players. A51 is not a standalone company but a product brand within Mizuno's baseball equipment business, and its identity is inseparable from both Ichiro's legacy and Mizuno's craftsmanship tradition.

A51 emerged from a collaboration between Ichiro Suzuki, one of the most celebrated hitters in baseball history, and Mizuno Corporation, a Japanese sports equipment company with a long tradition in baseball gear. The brand is described by Mizuno as a new brand jointly developed with Ichiro that pursues a new vision of baseball, with a series that weaves Ichiro's distinctive ideas throughout. The project is presented as bringing the world's highest philosophy of the game to the player's own baseball. The development of A51 is closely tied to Mizuno's glove craftsmanship. The hardball glove line was created with Mizuno glove craftsman Kōsaku Kishimoto, who reproduced Ichiro's preferences in the design. The official brand page includes a special talk feature titled "HISTORY OF ICHIRO×KISHIMOTO," highlighting the long relationship between the player and the craftsman. The gloves incorporate several signature details: leather thinned to the extreme for a lightweight feel while considering durability, achieving what Mizuno describes as the highest level of lightness for a commercial product; a platinum-colored silicone emblem that at the time was used only on Ichiro's own gloves; added leather on the catching surface fingertips (ring and middle fingers) for toughness against hard-hit balls; and simple, subtle stamping on the catching surface. The gloves are offered in box shapes for outfielders and stress-free designs for infielders. The bat line was developed with Mizuno craftsman Tamio Nawa, with the official page featuring a talk titled "ICHIRO×TAMIO NAWA 'A51' hardball bat." The bats are based on the "Ichiro Model" and were finely adjusted into new shapes. They are lightweight across all types and are designed to give players confidence and technique as they step up. Three balance designs are offered: the IS1 Type-1 at 860g with a counter-balance design for easy handling, the IS2 Type-2 at 850g with a middle-balance design for easy swing-through, and the IS3 Type-3 at 840g with a top-balance design that makes the head easy to use. The bats feature a power-arc line on the back to assist grip strength — a shape Ichiro himself has insisted on and continued to use — and embossed sheep leather on the palm for grip assistance, a leather different from standard products. The overall design is refined and balanced, with the A51 stamp applied simply and subtly. The hardball maple bat was released in February 2024. The lineup also expanded to include softball gloves, with the official page promoting the "surprising quality" of the softball A51 glove to high school players aiming for the next level. Pricing on the official page lists hardball gloves at ¥69,300 (tax included), softball gloves at ¥47,300, and the hardball maple bat at ¥26,400. A51 is sold through Mizuno's official online shop in Japan. As a brand, A51 sits within Mizuno's baseball equipment business and reflects both Ichiro's playing philosophy and Mizuno's tradition of working with top athletes to develop equipment.

• A51 brand jointly developed by Ichiro Suzuki and Mizuno is presented on Mizuno's official Japanese baseball site.

• Hardball maple A51 bat released in February 2024.

• Softball A51 glove lineup introduced and promoted to high school players.

Premium baseball equipment brand jointly developed by Ichiro and Mizuno, translating Ichiro's philosophy and craftsmanship into gloves and bats for players aiming to reach the next level.

• Mizuno Pro A51 hardball glove (infield size 9, model 1AJGH11303)

• Mizuno Pro A51 hardball glove (infield size 11, model 1AJGH11313)

• Mizuno Pro A51 hardball glove (outfield size 18N, model 1AJGH11307)

• Mizuno Pro A51 softball glove (infield size 9, model 1AJGR29003)

• Mizuno Pro A51 softball glove (infield size 11, model 1AJGR29013)

• Mizuno Pro A51 softball glove (outfield size 18N, model 1AJGR29007)

• Mizuno Pro Maple A51 hardball bat (IS1 Type-1, 84cm, 860g, model 1CJWH23184)

1. 1A51 - イチロー氏とMIZUNOが共同開発する、新しい野球の姿を追い求める新ブランド｜野球｜ミズノ公式オンラインjpn.mizuno.com
2. 2A51 - Wikidatawikidata.org
3. 3カタログ（フラッシュブック）｜ミズノ公式オンラインjpn.mizuno.com
4. 4【作業服/作業着】(ワークウエア) ラインナップ一覧｜ワーキング｜ミズノ公式オンラインjpn.mizuno.com
5. 5【安全靴/作業靴（ワークシューズ）】ラインナップ一覧｜ワーキング｜ミズノ公式オンラインjpn.mizuno.com